The degrees of freedom of multiway junctions in three dimensional gravity

Abstract

We demonstrate that $n$-way junctions in three dimensional gravity correspond to coupled $n-1$ strings each satisfying the Nambu-Goto equation in the smoothened background, and with sources consisting of Monge-Ampère like terms which couple the strings. For $n\ge 3$, these $n-1$ degrees of freedom survive the tensionless limit implying that matter-like behavior can arise out of \textit{pure} gravity. We interpret these stringy degrees of freedom of gravitational junctions holographically in terms of wavepackets which collectively undergo perfect reflection at the multi-interface in the dual conformal field theory.

arXiv comment8 pages, 2 figures; appendices expanded, version accepted in PRD

References in corpus (25)

• Gauge Theory Correlators from Non-Critical String Theory
• The Black Hole in Three Dimensional Space Time
• A Stress Tensor for Anti-de Sitter Gravity
• The Holographic Weyl anomaly
• Geometry of the 2+1 Black Hole
• Holographic Reconstruction of Spacetime and Renormalization in the AdS/CFT Correspondence
• Locally Localized Gravity
• Holography and Defect Conformal Field Theories
• Exact Conductance through Point Contacts in the $\nu =1/3$ Fractional Quantum Hall Effect
• Boundary conformal field theory approach to the two-dimensional critical Ising model with a defect line
• Permeable conformal walls and holography
• Three-dimensional quantum geometry and black holes
• Junctions of three quantum wires
• Localized Gravity in String Theory
• Holographic Calculation of Boundary Entropy
• Energy Reflection and Transmission at 2D Holographic Interfaces
• Topological defects and Goldstone excitations in domain walls between ferromagnetic quantum Hall effect liquids
• Holographic spacetime, black holes and quantum error correcting codes: A review
• Geometric Defects in Quantum Hall States
• Quantum thermodynamics of holographic quenches and bounds on the growth of entanglement from the QNEC
• Erasure tolerant quantum memory and the quantum null energy condition in holographic systems
• Multiway Junction Conditions: Booklets and Webs
• Nambu-Goto equation from three-dimensional gravity
• Generalized Clausius inequalities and entanglement production in holographic two-dimensional CFTs
• Holography for BCFTs with Multiple Boundaries: Multi-Splitting Quenches